Quote:
Originally Posted by Mr Downtown
Knowing the topography of the Midway there, I'm pretty sure those represent a tunnel.
It seems kind of pointless, though, with the impenetrable IC embankment just out of sight at the bottom.
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I don't think so. The same linetype is used for a path crossing the lagoon, and I'm sure that won't be a tunnel. My guess is that those indicate some kind of future phasing, maybe for improvements that are conditional on outside approvals like CDOT and the Park District. If Cornell is closed off, that will shift a lot of traffic to Stony Island where a pedestrian bridge might be desirable instead of a crosswalk. Nice to have, but not essential - similar to a new bridge over the lagoon.